High solubility gas flotation in liquid-solid separation

Details High solubility gas flotation in liquid-solid separation High solubility gas flotation in liquid-solid separation

1979-03-21

1981-05-12

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210625, 210707, C02F 312

Patent

active

042670500

ABSTRACT:
BOD-containing water is purified by oxygenation. The resulting sludge is subjected to flotation with a gas having a solubility in water higher than that of air.
The preferred source of high solubility gas is the vent gas from the oxygenation zone or stack gas obtained by burning methane generated by anaerobically digesting the floated solids.
Removal of insoluble contaminants from bacterial or bacterial-algal pond effluent using high solubility gas flotation is also disclosed.

REFERENCES:
patent: 2324400 (1943-07-01), Kelly et al.
patent: 2360811 (1944-10-01), Kelly et al.
patent: 2679477 (1954-05-01), Kivari et al.
patent: 2772234 (1956-11-01), Kelly
patent: 3787316 (1974-01-01), Brink et al.
patent: 4085041 (1978-04-01), Fullerton et al.
patent: 4211645 (1980-07-01), Zajic et al.

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